144 lines
4.1 KiB
C
144 lines
4.1 KiB
C
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/*
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ChibiOS - Copyright (C) 2016 Stephane D'Alu
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/**
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* @file NRF5/LLD/hal_wdg_lld.h
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* @brief NRF5 Watchdog Driver subsystem low level driver header template.
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*
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* @addtogroup WDG
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* @{
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*/
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#ifndef HAL_WDG_LLD_H
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#define HAL_WDG_LLD_H
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#if (HAL_USE_WDG == TRUE) || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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#define WDG_MAX_TIMEOUT_MS \
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((uint32_t)(0xFFFFFFFFu * 1000 / NRF5_LFCLK_FREQUENCY))
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @name Configuration options
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* @{
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*/
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/**
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* @brief WDG driver implement timeout callback.
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* @note The default is @p FALSE.
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*/
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#if !defined(WDG_USE_TIMEOUT_CALLBACK) || defined(__DOXYGEN__)
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#define WDG_USE_TIMEOUT_CALLBACK FALSE
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#endif
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/** @} */
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief Type of a structure representing an WDG driver.
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*/
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typedef struct WDGDriver WDGDriver;
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/**
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* @brief Driver configuration structure.
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* @note It could be empty on some architectures.
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*/
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typedef struct {
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struct {
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/**
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* @brief Pause watchdog while the CPU is sleeping
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*/
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uint8_t pause_on_sleep : 1;
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/**
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* @brief Pause watchdog while the CPU is halted by the debugger
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*/
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uint8_t pause_on_halt : 1;
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};
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/**
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*
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*/
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uint32_t timeout_ms;
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#if WDG_USE_TIMEOUT_CALLBACK == TRUE
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/**
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* @brief Notification callback when watchdog timedout
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*
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* @note About 2 cycles at NRF5_LFCLK_FREQUENCY are available
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* before automatic reboot.
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*
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*/
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void (*callback)(void);
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#endif
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} WDGConfig;
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/**
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* @brief Structure representing an WDG driver.
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*/
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struct WDGDriver {
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/**
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* @brief Driver state.
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*/
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wdgstate_t state;
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/**
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* @brief Current configuration data.
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*/
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const WDGConfig *config;
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/* End of the mandatory fields.*/
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NRF_WDT_Type *wdt;
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};
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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extern WDGDriver WDGD1;
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#ifdef __cplusplus
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extern "C" {
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#endif
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void wdg_lld_init(void);
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void wdg_lld_start(WDGDriver *wdgp);
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void wdg_lld_stop(WDGDriver *wdgp);
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void wdg_lld_reset(WDGDriver *wdgp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_WDG == TRUE */
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#endif /* HAL_WDG_LLD_H */
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/** @} */
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